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90 Commits

Author SHA1 Message Date
Roberto Ierusalimschy
8047b2d03e Tables have a 'lastfree' information only when needed 
Only tables with some minimum number of entries in their hash part
have a 'lastfree' field, kept in a header before the node vector.
 2022-11-01 15:42:08 -03:00
Roberto Ierusalimschy
7c3cb71fa4 Free bit 7 of GC 'marked' field 
Tables were using this bit to indicate their array sizes were real
('isrealasize'), but this bit can be useful for tests. Instead, they
can use bit 7 of their 'flag' field for that purpose. (There are only
six fast-access metamethods.) This 'flag' field only exists in tables,
so this use does not affect other types.
 2020-08-07 11:21:44 -03:00
Roberto Ierusalimschy
46c3587a6f Clearer distinction between types and tags 
LUA_T* represents only types; tags (types + Variants) are represented
by LUA_V* constants.
 2020-01-31 11:09:53 -03:00
Roberto Ierusalimschy
df13f25948 First version of OP_MMBIN opcodes 
In arithmetic/bitwise operators, the call to metamethods is made
in a separate opcode following the main one. (The main
opcode skips this next one when the operation succeeds.) This
change reduces slightly the size of the binary and the complexity
of the arithmetic/bitwise opcodes. It also simplfies the treatment
of errors and yeld/resume in these operations, as there are much
fewer cases to consider. (Only OP_MMBIN/OP_MMBINI/OP_MMBINK,
instead of all variants of all arithmetic/bitwise operators.)
 2019-08-27 13:59:39 -03:00
Roberto Ierusalimschy
b80077b8f3 Change in the handling of 'L->top' when calling metamethods 
Instead of updating 'L->top' in every place that may call a
metamethod, the metamethod functions themselves (luaT_trybinTM and
luaT_callorderTM) correct the top. (When calling metamethods from
the C API, however, the callers must preserve 'L->top'.)
 2019-07-26 14:59:39 -03:00
Roberto Ierusalimschy
23e6bac8a0 Keep correct type for immediate operands in comparisons 
When calling metamethods for things like 'a < 3.0', which generates
the opcode OP_LTI, the C register tells that the operand was
converted to an integer, so that it can be corrected to float when
calling a metamethod.

This commit also includes some other stuff:
- file 'onelua.c' added to the project
- opcode OP_PREPVARARG renamed to OP_VARARGPREP
- comparison opcodes rewritten through macros
 2019-03-22 13:37:17 -03:00
Roberto Ierusalimschy
5e76a4fd31 New macros for arithmetic/bitwise operations in 'luaV_execute' 
The repetitive code of the arithmetic and bitwise operators in
the main iterpreter loop was moved to appropriate macros.
(As a detail, the function 'luaV_div' was renamed 'luaV_idiv',
as it does an "integer division" (floor division).
 2018-11-05 16:10:42 -02:00
Roberto Ierusalimschy
bd96330d03 First "complete" implementation of to-be-closed variables 
Still missing:
- handling of memory errors when creating upvalue (must run closing
method all the same)
- interaction with coroutines
 2018-10-17 10:44:42 -03:00
Roberto Ierusalimschy
f99509581e Removed extra information from RCS keyword strings 
Version numbers and dates (mostly wrong) from RCS keyword strings
removed from all source files; only the file name are kept.
 2018-08-23 14:26:12 -03:00
Roberto Ierusalimschy
b43300c14f change in 'LUAI_DDEC' to allow variables to be static in 'onelua' 
+ change in 'LUAMOD_API' as opening functions do not need to be global
 2018-06-18 09:51:05 -03:00
Roberto Ierusalimschy
6f2b8e21c4 added 'const' to 'Proto*' when possible 2018-06-08 16:06:59 -03:00
Roberto Ierusalimschy
fb8fa66136 no more 'luaH_emptyobject' and comparisons of addresses of global variables 
(instead, use a different kind of nil to signal the fake entry returned
when a key is not found in a table)
 2018-06-01 13:51:34 -03:00
Roberto Ierusalimschy
892aff2a07 avoid circular inclusion between ltm.h <-> lstate.h 2018-05-23 11:41:20 -03:00
Roberto Ierusalimschy
03c6a05ec8 no more nil-in-table 2018-04-04 11:23:41 -03:00
Roberto Ierusalimschy
b7edf5d2d8 metamethods for 'removekey'/'keyin' 2018-02-27 14:48:28 -03:00
Roberto Ierusalimschy
9243c414d9 first version of empty entries in tables 
(so that, in the future, tables can contain regular nil entries)
 2018-02-23 10:16:18 -03:00
Roberto Ierusalimschy
49dae52d08 correct way to check stack space for vararg functions 2018-02-17 17:20:00 -02:00
Roberto Ierusalimschy
b1379936cf vararg back to '...' (but with another implementation) 
new implementation should have zero overhead for non-vararg functions
 2018-02-09 13:16:06 -02:00
Roberto Ierusalimschy
318a9a5859 new opcode 'PREPVARARG' 
(avoids test for vararg function in all function calls)
 2018-02-07 13:18:04 -02:00
Roberto Ierusalimschy
89110986d7 bug in tailcall of vararg functions 
(when adjusting missing parameters)
 2018-01-28 11:39:52 -02:00
Roberto Ierusalimschy
86431a2f1c new opcodes BANDK/BORK/BXORK. (They do not use immediate operands 
because, too often, masks in bitwise operations are integers larger
than one byte.)
 2017-12-13 16:32:09 -02:00
Roberto Ierusalimschy
093c16b67b new opcodes 'OP_LTI' and 'OP_LEI' 2017-11-27 15:44:31 -02:00
Roberto Ierusalimschy
1b10033583 new function 'luaT_trybiniTM' 
to handle tag methods for instructions with immediate integer arguments
 2017-09-27 15:59:08 -03:00
Roberto Ierusalimschy
f96497397a new type 'StackValue' for stack elements 
(we may want to put extra info there in the future)
 2017-06-29 12:06:44 -03:00
Roberto Ierusalimschy
5c8770f896 back to old-style vararg system (with vararg table collecting extra 
arguments)
 2017-05-13 10:04:33 -03:00
Roberto Ierusalimschy
fb9de1b4d7 detail ('luaT_callbinTM' does not need to be extern) 2017-05-08 12:57:23 -03:00
Roberto Ierusalimschy
7777b412de When available, use metafield '__name' in error messages 2016-02-26 16:20:15 -03:00
Roberto Ierusalimschy
bdf566a8a3 `name' in comments changed to 'name' 2014-10-25 09:50:46 -02:00
Roberto Ierusalimschy
1a3656e56e more relaxed rules for __eq metamethod (more similar to other 
operators)
 2014-06-10 15:53:18 -03:00
Roberto Ierusalimschy
1ea2d20f74 first implementation of '<<', '>>', and '~' (bitwise not) 2013-12-30 18:47:58 -02:00
Roberto Ierusalimschy
c0edab0f6d first implementation of bitwise operators '&' (band), '|' (bor), 
and '~' (bxor)
 2013-12-18 12:12:03 -02:00
Roberto Ierusalimschy
a948054a19 new order for binary operations (grouping them by type of result) 2013-12-16 17:06:52 -02:00
Roberto Ierusalimschy
b4be507578 new function 'luaT_trybinTM' 2013-04-29 13:56:50 -03:00
Roberto Ierusalimschy
a2f5c28a80 new operation '//' (integer division) 2013-04-26 10:08:29 -03:00
Roberto Ierusalimschy
9600c60df3 functions 'get_equalTM' and 'call_orderTM' moved to other files 
to make 'lvm.c' smaller
 2013-04-25 13:07:52 -03:00
Roberto Ierusalimschy
32bf6c9b27 functions 'traceexec', 'callTM', and 'call_binTM' moved to other 
files to make 'lvm.c' a little smaller
 2013-04-25 12:59:42 -03:00
Roberto Ierusalimschy
8f8665fffa 'ttypenv' -> 'ttnov' 2013-04-12 16:07:09 -03:00
Roberto Ierusalimschy
98816d0ce5 small problems with 'luaone.c' 2011-02-28 14:32:10 -03:00
Roberto Ierusalimschy
7dfa4cd655 first implementation of light C functions 2010-04-14 12:13:48 -03:00
Roberto Ierusalimschy
070d3743a7 "no value" added to array luaT_typenames + occurrences of "userdata" 
in that array unified in a single address
 2010-01-13 14:18:25 -02:00
Roberto Ierusalimschy
062e809e54 new macros 'LUAI_DDEC'/'LUAI_DDEF' to better control declarations and 
definitions of non-static variables
 2009-11-19 17:06:52 -02:00
Roberto Ierusalimschy
fe0838cd1c tables and strings respect __len metamethod 2007-09-10 14:59:32 -03:00
Roberto Ierusalimschy
d987cf1f81 new mark LUAI_DATA for extern data 2005-06-06 10:30:25 -03:00
Roberto Ierusalimschy
f21e9c172f details 2005-05-20 12:53:42 -03:00
Roberto Ierusalimschy
6cf85dcc90 metatables for all types 2005-05-05 12:34:03 -03:00
Roberto Ierusalimschy
8718fda9b2 added LUAI_FUNC to functions not in the API 2005-04-25 16:24:10 -03:00
Roberto Ierusalimschy
7d57ea70bc new mod' (%') operator 2005-03-08 15:00:16 -03:00
Roberto Ierusalimschy
47fc57a252 TObject' renamed to TValue' + other name changes and better assertions 
for incremental garbage collection
 2003-12-10 10:13:36 -02:00
Roberto Ierusalimschy
af850484a9 default metatable can be NULL 2003-12-01 16:22:56 -02:00
Roberto Ierusalimschy
5c5d9b2703 back to `__mode' metafield to specify weakness 2002-11-14 10:01:35 -02:00